Class 372/6 - OPTICAL FIBER LASER

Subclass of Class 372 - Coherent light generators
Definition: Subject matter in which the laser is constructed in the
No. of patents: 1499
Last issue date: 03/09/2010

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Number	Title	Issue Date
7675950	Laser light source device and image display apparatus There has been a problem that pumping light leaks from a part having a coating at the joint of a double-clad fiber added with a rare earth and a general single-mode fiber, and heat is generated partly from the fiber by this energy thus causing deterioration of the f...	03/09/2010
7668211	Waveguide-pumping gain guided index antiguided fiber laser Methods, systems and devices for a waveguide pumping gain guided index antiguided fiber laser having a fiber selected for a refractive index crossover at a wavelength between a pump wavelength and a laser emission wavelength. A waveguide pumping system pumps a light...	02/23/2010
7649914	Optical fibre laser A fiber laser is disclosed comprising a single mode or low-order-mode cladding pumped fiber laser oscillator or preamplifier, a cladding pumped fiber laser power amplifier to guide multiple transverse modes, wherein an output from the oscillator or preamplifier is a...	01/19/2010
7633977	Multispectral laser with improved time division multiplexing A laser provides a cavity with complementary wavelength-dependent delay elements to provide the same optical length but time-staggered light paths for different colors. This provides the ability to individually control multiple narrow bands of colors each in a separ...	12/15/2009
7630415	Micro crystal fiber lasers and method of making frequency-doubling crystal fibers A method of fabricating micro crystal fiber lasers and frequency-doubling crystal fibers is disclosed. The micro crystal fiber laser contains gain crystal fibers, frequency-doubling crystal fibers, and a semiconductor laser. The semiconductor laser provides a laser ...	12/08/2009
7627006	Multi-wavelength laser source A multi-wavelength laser source is provided including a pump laser unit, a gain section and an output. The pump laser unit generates an energy signal, which is applied to the gain section. The gain section includes a gain medium with having a superstructure grating ...	12/01/2009
7620077	Apparatus and method for pumping and operating optical parametric oscillators using DFB fiber lasers An optical parametric oscillator (OPO) is described that efficiently converts a near-infrared laser beam to tunable mid-infrared wavelength output. In some embodiments, the OPO includes an optical resonator containing a nonlinear crystal, such as periodically-poled ...	11/17/2009
7616667	Broadband fiber laser A broadband fiber laser provides a lasing cavity including a reflective mirror and at least one fiber Bragg grating for further providing a lasing signal to resonate and be amplified therein. Alternatively, the wavelength of the fiber laser can be either fixed or tu...	11/10/2009
7616668	Fiber laser system using fiber having dysprosium Provided is a fiber laser system including fiber containing dysprosium. The fiber laser system uses 1.7-μm pump light. A resonator of the fiber laser system includes a dichroic mirror, a partial reflection mirror, and/or an FBG. Therefore, the fiber laser system ca...	11/10/2009
7606273	Wavelength and intensity stabilized laser diode and application of same to pumping solid-state lasers An efficient and low-noise solid-state laser is optically pumped by one or more laser diode(s) driven by RF modulated current. The solid-state laser operation is stabilized by the pump source stable in both spectrum and intensity, in conjunction with automatic power...	10/20/2009
7602821	Device for generating laser radiation in the infrared The invention is in the field of laser radiation generation in bands II and III, and relates to a device for generating laser radiation in the infrared having means for modifying the amplified-radiation frequency and using the Raman effect, characterized by addition...	10/13/2009
7602822	Fiber laser based production of laser drilled microvias for multi-layer drilling, dicing, trimming of milling applications Fiber lasers and methods for constructing and using fiber lasers for micro-/nano-machining with output beams including stacked pulses and combinations of continuous wave, pseudo-continuous wave and pulse sequence components. ...	10/13/2009
7599406	Fiber ring laser A fiber ring laser is provided, which includes an optic amplifier, a first optical coupler (OCP), a second OCP, a first fiber ring, a second fiber ring, a first polarization controller (PC), and a second PC. The first fiber ring is coupled to the optic amplifier, th...	10/06/2009
7599404	Composite optic fibre for laser with pump and laser wave confinement, applications to lasers A composite optic fibre for laser includes a core surrounded with a pump guiding sheath in contact with the core, sheath being a photonic structure formed by a substantially regular matrix assembly of coaxial capillaries, spaced apart and arranged parallel to the co...	10/06/2009
7599405	Method and apparatus for coherently combining multiple laser oscillators A laser apparatus having multiple laser devices coupled together. The laser devices comprise optical fibers with laser active regions. Each of the fibers has a reflector disposed at one end and is connected to a combiner on the other end. A laser pump device for eac...	10/06/2009
7593435	Powerful fiber laser system A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at a first wavelength, and with at least one pumping assembly capable o...	09/22/2009
7593434	Compression design for high energy short pulse fiber laser A fiber Chirped Pulse Amplification (CPA) laser system includes a fiber mode-locking oscillator for generating a laser for projecting to a fiber stretcher for stretching a pulse width of the laser. The fiber CPA laser system further includes a multistage amplifier f...	09/22/2009
7590155	Hybrid high power laser to achieve high repetition rate and high pulse energy A fiber laser cavity that provides a new pulse shaping and spectral shaping technique is disclosed in this invention to achieve the purpose of resolving the difficulties arising from the issues related to Q-switched solid state lasers. The laser system achieves high...	09/15/2009
7580431	Method and apparatus for high power amplification in multimode fibers An apparatus and method for high power amplification in a multimode fiber amplifier. The apparatus includes a diffraction limited low power laser, a multimode fiber amplifier, and a lens. The multimode fiber amplifier is coupled to the low power laser to amplify the...	08/25/2009
7558298	Laser device triggered by a photonic fiber A device producing laser pulses of durations smaller than 30 ns, and including along its internal optical axis: a laser resonator of optical length smaller than 2 m including two reflecting ends and incorporating an MPF photonic fiber pumped continuously by at least...	07/07/2009
7555022	Reduction of pulse width by spectral broadening in amplification stage and after amplification stage This invention discloses a fiber Chirped Pulse Amplification (CPA) laser system. The system includes a fiber mode-locking oscillator for generating a seed laser. The laser system further includes a stretching stage for stretching the seed laser for projecting to an ...	06/30/2009
7545836	Apparatus and method for temporally shaping drive current to seed-signal-laser-diodes for high-powered fiber-laser amplifier systems Apparatus and method for generating controlled-linewidth laser-seed-signals for high-powered fiber-laser amplifier systems. In some embodiments, the natural chirp (frequency change of laser light over a short start-up time) of a DBR laser diode when driven by pulsed...	06/09/2009
7542488	Fiber laser An optical fiber for producing laser radiation at a characteristic wavelength includes a first multimode core region and an active region embedded within the core region for producing radiation at the characteristic wavelength when pumped by pump radiation. The core...	06/02/2009
7535934	Optical continuum source including light generation beyond wavelength edges of continuum An optical continuum source is formed that is used to generate both a continuum and one or more light peaks outside the bandwidth of the continuum. In particular, one or more fiber Bragg gratings exhibiting a resonant wavelength less than the short wavelength edge (...	05/19/2009
7529278	Nonlinear polarization pulse shaping model locked fiber laser at one micron with photonic crystal (PC), photonic bandgap (PBG), or higher order mode (HOM) fiber A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump, wherein the laser cavity further includes a normal dispersion fiber segment with a β″>0 where β″ representing a fiber dispersion, and an anomalo...	05/05/2009
7526003	Nonlinear polarization pulse shaping mode locked fiber laser at one micron A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The fiber laser cavity further includes a positive dispersion fiber segment and a negative dispersion fiber segment for generating a net negative disp...	04/28/2009
7508848	Method and configurations in achieving high energy operation for photonic band gap (PGB) fiber with end caps A fiber Chirped Pulse Amplification (CPA) laser system includes a photonics band gap (PBG) fiber to function as a compressor. The PBG fiber is spliced with a fiber end cap that has an core expander for increasing a mode area of the PBG fiber. With increased mode are...	03/24/2009
7502391	Eye safe high power fibre laser Apparatus for providing optical radiation includes a pump source and at least one first amplifying waveguide. The first amplifying waveguide emits optical radiation in excess of 1400 nm when pumped by the pump source. In one embodiment, the pump source can include a...	03/10/2009
7496117	Laser arrangement and a method for generating power pulses A laser arrangement including a gain fiber to provide nonlinear amplification, the gain fiber having a first end and a second end, a dispersion adaptation fiber having a first end and a second end, and an output coupler is disclosed. The first end of the dispersion ...	02/24/2009
7489711	Laser beam processing apparatus This laser beam processing apparatus includes a fiber laser oscillator, a laser beam branching unit, a laser beam injecting unit, a fiber transmission system, a laser beam irradiating unit, and a processing table. Based on a fiber laser beam, which is oscillation-ou...	02/10/2009
7477664	Nonlinear polarization pulse shaping mode locked fiber laser A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The fiber laser cavity further includes a positive dispersion fiber segment and a negative dispersion fiber segment for generating a net negative disp...	01/13/2009
7477665	Electronically tuned self-starting polarization shaping mode locked fiber laser A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The fiber laser cavity further includes a positive dispersion fiber segment and a negative dispersion fiber segment for generating a net negative disp...	01/13/2009
7477666	All fiber based short pulse amplification at one micron A fiber laser cavity that includes a laser gain medium for receiving an optical input projection from a laser pump. The fiber laser cavity further includes a positive dispersion fiber segment and a negative dispersion fiber segment for generating a net negative disp...	01/13/2009
7466726	Fast continuously wavelength tuning single frequency fiber laser using tunable polymer optical filters A method for generating a laser projection by employing a laser gain medium for receiving an optical input projection from a laser pump. The method further includes a step of employing a mode selection filter comprising an electro-optical (EO) tunable layer disposed...	12/16/2008
7457327	Fiber laser oscillators A fiber laser oscillator (1; 100) has an optical fiber (10), a pumping light emitting device (30), a light guide member (40; 140), and a core member (50). The core member (50) is configured to have a flat plate-shaped, cylin...	11/25/2008
7457326	Method and apparatus for coherently combining multiple laser oscillators A laser apparatus having multiple laser devices coupled together. The laser devices include optical fibers with laser active regions. Each of the fibers has a reflector disposed at one end and is connected to a combiner on the other end. A laser pump device for each...	11/25/2008
7443893	Method and system for tunable pulsed laser source A tunable pulsed laser source comprising a seed source adapted to generate a seed signal and an optical circulator. The optical circulator includes a first port coupled to the seed source, a second port, and a third port. The laser source also includes an amplitude ...	10/28/2008
7440176	Bi-directionally pumped optical fiber lasers and amplifiers An optical system including a gain material pumped by pump energy bands delivered to the gain material from different directions and separated sufficiently to prevent crosstalk between pump energy sources. Embodiments of the pump energy sources may be configured to ...	10/21/2008
7436863	Fiber laser beam processing apparatus A fiber laser beam processing apparatus is configured by a fiber laser oscillator, a laser power source unit, a laser beam injecting unit, a fiber transmission system, a laser beam irradiating unit, a processing table, etc. A portion of a fiber laser beam oscillated...	10/14/2008
7436862	Self-similar laser oscillator A laser producing high energy ultrashort laser pulses comprises a normal dispersion segment, a gain segment, an anomalous dispersion segment with negligible nonlinearity and an effective saturable absorber arranged to form a laser cavity. Each segment is optically i...	10/14/2008

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Class 372/6 - OPTICAL FIBER LASER